EP3151307B1 - Battery module and battery pack comprising same - Google Patents

Battery module and battery pack comprising same Download PDF

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Publication number
EP3151307B1
EP3151307B1 EP15803727.5A EP15803727A EP3151307B1 EP 3151307 B1 EP3151307 B1 EP 3151307B1 EP 15803727 A EP15803727 A EP 15803727A EP 3151307 B1 EP3151307 B1 EP 3151307B1
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EP
European Patent Office
Prior art keywords
fastening
holes
battery
fastening members
battery module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15803727.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3151307A1 (en
EP3151307A4 (en
Inventor
Jaihyun SEO
Seong Tae Kim
Jin Kyu Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Chem Ltd
Original Assignee
LG Chem Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Chem Ltd filed Critical LG Chem Ltd
Priority to PL15803727T priority Critical patent/PL3151307T3/pl
Publication of EP3151307A1 publication Critical patent/EP3151307A1/en
Publication of EP3151307A4 publication Critical patent/EP3151307A4/en
Application granted granted Critical
Publication of EP3151307B1 publication Critical patent/EP3151307B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/121—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/591—Covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/12—Nuts or like thread-engaging members with thread-engaging surfaces formed by inserted coil-springs, discs, or the like; Independent pieces of wound wire used as nuts; Threaded inserts for holes
    • F16B37/122—Threaded inserts, e.g. "rampa bolts"
    • F16B37/125—Threaded inserts, e.g. "rampa bolts" the external surface of the insert being threaded
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present invention relates to a battery module and a battery pack including the same.
  • a secondary battery which can be charged and discharged, has been widely used as an energy source for wireless mobile devices or an auxiliary power device.
  • the secondary battery has attracted considerable attention as a power source for electric vehicles (EV), hybrid electric vehicles (HEV), and plug-in hybrid electric vehicles (Plug-in HEV), which have been developed to solve problems, such as air pollution, caused by existing gasoline and diesel vehicles using fossil fuels.
  • EV electric vehicles
  • HEV hybrid electric vehicles
  • Plug-in HEV plug-in hybrid electric vehicles
  • Small-sized mobile devices use one or several battery cells for each device.
  • middle or large-sized devices such as auxiliary power devices or vehicles, use a battery module having a plurality of battery cells electrically connected to each other because high output and large capacity are necessary for the middle or large-sized devices.
  • the battery module is manufactured so as to have as small a size and weight as possible.
  • a prismatic battery or a pouch-shaped battery which can be stacked with high integration and has a small weight to capacity ratio, is usually used as a battery cell (unit battery) of the middle or large-sized battery module.
  • much interest is currently focused on the pouch-shaped battery, which uses an aluminum laminate sheet as a sheathing member, because the pouch-shaped battery is lightweight, the manufacturing cost of the pouch-shaped battery is low, and it is easy to modify the shape of the pouch-shaped battery.
  • a high-output, large-capacity battery pack including a plurality of battery modules is configured to have a structure in which a plurality of battery cells or battery modules is stacked while being adjacent to each other, and the battery cell stack or the battery module stack is fixed to a base plate.
  • long bolts and additional fixing brackets connected to frames of the battery modules and the base plate in a surface contact fashion are used as means for fixing the battery modules to the base plate.
  • the battery cells may move in a direction in which the battery cells are stacked or a direction perpendicular to the ground when excessive impact is applied to the battery pack with the result that safety of the battery pack is lowered.
  • the internal space of the battery pack is decreased, and the weight of the battery pack is increased, due to the use of the additional fixing brackets.
  • a process of fastening the fixing brackets increases total process time.
  • JP 2008 282639 , EP 2 624 334 and KR 2012 0074425 are illustrations of this prior art.
  • a battery module having a plurality of battery cells
  • the battery module including a unit module stack configured to have a structure in which a plurality of unit modules, each of which has a structure in which the battery cells are mounted to a cartridge, are stacked in a vertical direction on the basis of a ground
  • the cartridge being provided with one or more through holes, an upper end plate and a lower end plate for supporting an upper end and a lower end of the unit module stack, respectively, the upper end plate being provided with first fastening holes communicating with the through holes, the lower end plate being provided with second fastening holes communicating with the through holes, a module housing for surrounding at least one lateral side of the unit module stack mounted on the lower end plate and a bottom of the lower end plate, the module housing being provided with third fastening holes communicating with the second fastening holes, first fastening members having hollow parts, through which second fastening members are inserted, formed along a central axis thereof, the
  • the unit module stack including the unit modules and the upper and lower end plates coupled to the unit module stack for supporting the upper and lower ends of the unit module stack, respectively, are fixed to the module housing using the first and second fastening members each having the specific structure. Consequently, the fixing structure of the battery modules is securely maintained even when external impact is applied to the battery pack, and no additional member for mounting and fixing the battery modules is needed, whereby the internal space of the battery pack is increased.
  • each of the first fastening members may include a head having an outer diameter greater than an inner diameter of a corresponding one of the first fastening holes, a fastening bar inserted through a corresponding one of the first fastening holes and a corresponding one of the through holes, and a first fastening end having a screw thread formed at an outer surface thereof, the screw thread being coupled into a corresponding one of the second fastening holes, and a hollow part may be formed through the head, the fastening bar, and the first fastening end along central axes of the head, the fastening bar, and the first fastening end.
  • Each of the second fastening members may include a head having an outer diameter greater than an inner diameter of the hollow part of the first fastening member, an insertion bar inserted through the hollow part of the first fastening member, and a second fastening end protruding from a lower end of the hollow part of the first fastening member, the second fastening end having a screw thread formed at an outer surface thereof, the screw thread being coupled into a corresponding one of the third fastening holes.
  • each of the first fastening members may be provided with a depressed part, in which the head of a corresponding one of the second fastening members is located, and the fastening bar may be provided at an inside of an upper end thereof with a wrenching bolt structure.
  • the depressed part may be depressed by at least a height of the head of each of the second fastening members.
  • each of the second fastening members may be provided with a wrenching bolt structure.
  • the cartridges, the upper end plate, and the lower end plate may be coupled to one another by inserting the first fastening members therethrough and then coupled to the module housing by fastening the second fastening members into the third fastening holes through the hollow parts.
  • the second fastening holes and the third fastening holes may each be provided with a screw structure, into which the first fastening end of a corresponding one of the first fastening members and the second fastening end of a corresponding one of the second fastening members are threadedly engaged.
  • the first fastening members and the second fastening members may each be made of a metal material, and the upper end plate and the lower end plate may each be made of a metal material.
  • the present invention is not limited thereto.
  • the cartridge may be configured to have a rectangular structure corresponding to the battery cells such that the battery cells are mounted to the cartridge and may be provided at four corners thereof with through holes, through which the first fastening members are inserted to fix the unit module stack.
  • Each of the battery cells may be, for example, a pouch-shaped battery cell having an electrode assembly mounted in a battery case made of a laminate sheet comprising a resin layer and a metal layer.
  • each of the battery cells may be a pouch-shaped battery cell configured to have a structure in which an electrode assembly of a positive electrode/separator/negative electrode structure is contained in a battery case together with an electrolyte in a sealed state.
  • each of the battery cells may be a plate-shaped battery cell configured to have an approximately hexahedral structure having a small thickness to width ratio.
  • the pouch-shaped battery cell may include a pouch-shaped battery case.
  • the battery case is configured to have a laminate sheet structure in which an outer coating layer made of a polymer resin exhibiting high durability, a barrier layer made of a metal material blocking moisture or air, and an inner sealant layer made of a thermally bondable polymer resin are sequentially stacked.
  • the battery case of the pouch-shaped battery cell may be configured to have various structures.
  • the case of the pouch-shaped battery cell may be configured to have a structure in which an electrode assembly is received in a receiving part formed at an upper inner surface and/or a lower inner surface of a two-unit member, and the upper and lower contact regions of the outer edge of the battery case are sealed by thermal bonding.
  • the pouch-shaped battery cell with the above-stated construction is disclosed in PCT International Application No. PCT/KR2004/003312 , which has been filed in the name of the applicant of the present patent application.
  • the battery case may be configured to have a structure in which an electrode assembly is received in a receiving part formed at an upper inner surface and/or a lower inner surface of a one-unit member and the upper and lower contact regions of the outer edge of the battery case are sealed by thermal bonding.
  • the laminate sheet may be configured to have a structure comprising a thermally bondable inner resin layer, an isolation metal layer, and an outer resin layer exhibiting high durability.
  • a middle or large-sized battery pack of high output and large capacity including the battery module with the above-stated construction as a unit body.
  • the middle or large-sized battery pack may be configured to have a structure in which a various number of battery modules are mounted while being electrically connected to each other based on required capacity and output.
  • a device including the battery pack with the above-stated construction.
  • the device may be any one selected from among an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, and a power storage device.
  • the present invention is not limited thereto.
  • a battery module according to the present invention uses fastening members each configured to have a bushing fastening structure. Consequently, the present invention has the effect of securely maintaining a fixing structure of the battery module even when external impact, such as vibration or dropping, occurs, thereby improving safety of the battery module.
  • the present invention has the effect of increasing an internal space of a battery pack.
  • FIG. 1 is a perspective view typically showing an exemplary battery cell, which will be mounted in a unit module of the present invention
  • FIG. 2 is an exploded typical view showing the battery cell of FIG. 1 .
  • a plate-shaped battery cell 200 is configured to have a structure in which an electrode assembly, including positive electrodes, negative electrodes, and separators disposed respectively between the positive electrodes and the negative electrodes, is mounted in a pouch-shaped battery case 100 in a sealed state such that two electrode terminals 222 and 232 electrically connected to positive electrode and negative electrode tabs 220 and 230 of the electrode assembly are exposed outward.
  • the battery case 100 includes a case body 140 having a depressed receiving part 142, in which the electrode assembly 210 is located, and a cover 150 integrally connected to the case body 140.
  • the positive electrode tabs 220 and the negative electrode tabs 230 of the electrode assembly 210 which has a stacked type structure or a stacked/folded type structure, are respectively coupled to the electrode terminals 222 and 232 by welding.
  • insulative films 240 are attached to the top and bottom of each of the electrode terminals 222 and 232 in order to prevent the occurrence of a short circuit between a thermal welding device and the electrode terminals 222 and 232 and to secure sealing between the electrode terminals 222 and 232 and the battery case 100 when a surplus part 144 of the case body 140 and the cover 150 are thermally welded to each other using the thermal welding device.
  • the case body 140 and the cover 150 each include an outer resin layer 110, an isolation metal layer 120, and an inner resin layer 130.
  • the inner resin layer 130 of the case body 140 and the inner resin layer 130 of the cover 150 are fixed to each other in tight contact due to heat and pressure applied to the outer surface of the case body 140 and the outer surface of the cover 150 from the thermal welding device (not shown).
  • the surplus part 144 of the case body 140 and the cover 150 are thermally welded to each other in a state in which the electrode assembly 210, which is impregnated with an electrolyte, is located in the receiving part 142. As a result, a sealed portion is formed at the battery case 100.
  • FIG. 3 is an exploded perspective view showing a unit module stack according to an embodiment of the present invention
  • FIG. 4 is a perspective view typically showing the unit module stack of FIG. 3
  • FIG. 5 is an exploded perspective view showing a battery module according to an embodiment of the present invention
  • FIG. 6 is a perspective view typically showing the battery module of FIG. 5 .
  • a battery module 500 includes a unit module stack 300 including a plurality of cartridges 20 stacked in a vertical direction on the basis of the ground in a state in which battery cells 200 are mounted to each of the cartridges 20, an upper end plate 10 and a lower end plate 30 for supporting the uppermost one and the lowermost one of the cartridges 20, respectively, and a module housing 70 having a structure for surrounding lateral sides of the unit module stack 300 mounted on the lower end plate 30 and the bottom of the lower end plate 30.
  • Each of the cartridges 20 is provided at four corners thereof with through holes 21.
  • the upper end plate 10 is provided at regions thereof corresponding to the through holes 21 with first fastening holes 11 such that the first fastening holes 11 communicate with the respective through holes 21.
  • the lower end plate 30 is provided at regions thereof corresponding to the through holes 21 with second fastening holes (not shown) such that the second fastening holes communicate with the respective through holes 21.
  • the module housing 70 is provided at regions thereof corresponding to the second fastening holes with third fastening holes 71 such that the third fastening holes 71 communicate with the respective second fastening holes.
  • the second fastening holes and the third fastening holes 71 each are provided at an inner circumference thereof with a screw structure (not shown), into which a first fastening end 54 (see FIG. 7 ) and a second fastening end 63 (see FIG. 7 ) formed at a first fastening member 50 and a second fastening member 60 are threadedly engaged.
  • the first fastening end 54 of the first fastening member 50 is coupled into each of the second fastening holes, and the second fastening end 63 of the second fastening member 60 is easily coupled into each of the third fastening holes 71 of the module housing 70.
  • FIG. 7 is a perspective view showing a fastening member according to an embodiment of the present invention
  • FIG. 8 is a side view, a plan view, and a bottom view typically showing the fastening member of FIG. 7
  • FIG. 9 is a perspective view typically showing a second fastening member according to an embodiment of the present invention.
  • a fastening member according to the present invention includes a first fastening member 50 and a second fastening member 60.
  • the first fastening member 50 includes a head 51 having an outer diameter W2 greater than an inner diameter W1, a fastening bar 52 inserted through each of the first fastening holes 11 and each of the through holes 21, and a first fastening end 54 having a screw thread formed at the outer surface thereof, the screw thread being coupled into each of the second fastening holes.
  • a hollow part 55 is formed through the head, the fastening bar, and the first fastening end along central axes of the head, the fastening bar, and the first fastening end.
  • the head 51 of the first fastening member 50 is provided with a depressed part 57, in which a head 61 of the second fastening member 60 is stably located.
  • the fastening bar 52 is provided at the inside of the upper end thereof with a wrenching bolt structure 56 for easy fastening.
  • the second fastening member 60 includes a head 61 having an outer diameter W1 greater than an inner diameter W3 of the hollow part 55 of the first fastening member 50, an insertion bar 62 inserted through the hollow part 55 of the first fastening member 50, and a second fastening end 63 protruding from the lower end of the hollow part 55, the second fastening end 63 having a screw thread formed at the outer surface thereof, the screw thread being coupled into each of the third fastening holes 71.
  • the head 61 is provided with a wrenching bolt structure 66 for easy fastening.
  • the first fastening members 50 are inserted into the second fastening holes (not shown) of the lower end plate 30 through the first fastening holes 11 of the upper end plate 10 and the through holes 21 of the cartridges 20.
  • the unit module stack 300 including the cartridges 20, the upper end plate 10, and the lower end plate 30 are coupled to one another.
  • the second fastening members 60 are inserted through the respective first fastening members 50 without interference with the respective first fastening members 50, and then the second fastening ends 63 of the second fastening members 60 are threadedly coupled into the third fastening holes 71 formed at the module housing 70.
  • the unit module stack 300, the upper end plate 10, the lower end plate 30, and the module housing 70 are securely fixed.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
EP15803727.5A 2014-06-02 2015-05-28 Battery module and battery pack comprising same Active EP3151307B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15803727T PL3151307T3 (pl) 2014-06-02 2015-05-28 Moduł akumulatora i zawierający go pakiet akumulatorów

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KR1020140066757A KR101820935B1 (ko) 2014-06-02 2014-06-02 전지모듈 및 이를 포함하는 전지팩
PCT/KR2015/005348 WO2015186923A1 (ko) 2014-06-02 2015-05-28 전지모듈 및 이를 포함하는 전지팩

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EP (1) EP3151307B1 (ko)
JP (1) JP6474836B2 (ko)
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KR101820935B1 (ko) 2018-01-22
EP3151307A1 (en) 2017-04-05
CN204680700U (zh) 2015-09-30
CN105304833B (zh) 2018-04-20
JP6474836B2 (ja) 2019-02-27
EP3151307A4 (en) 2017-05-24
PL3151307T3 (pl) 2020-05-18
CN105304833A (zh) 2016-02-03
US20170200925A1 (en) 2017-07-13
KR20150138626A (ko) 2015-12-10
US10283744B2 (en) 2019-05-07
JP2017517117A (ja) 2017-06-22
WO2015186923A1 (ko) 2015-12-10

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